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Alex777 [14]
3 years ago
11

If a = -9 and b= -4, what is the value of a + b? -5, 5, -13, 13.

Mathematics
2 answers:
kirill115 [55]3 years ago
8 0

Answer:

-13

Step-by-step explanation:

simply add

garik1379 [7]3 years ago
8 0

Answer:

Step-by-step explanation:

a+b

-9+(-4)

-9-4

-13

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The solution to the equation r(1 - 2cosФ) = 1 is given as x² + y² - 4x√(x² + y²)  + 4x² = 1

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more variables and numbers.

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r = √(x² + y²) and cosФ = x / √(x² + y²)

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The solution to the equation r(1 - 2cosФ) = 1 is given as x² + y² - 4x√(x² + y²)  + 4x² = 1

Find out more on equation at: brainly.com/question/2972832

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